Abstract: Lithium-ion batteries have high calorific value, fast combustion and propagation speed, and there is a risk of reignition and explosion. Especially, their combustion mode from the inside out prevents the fire extinguishing agent from entering the interior of the battery, resulting in low efficiency and even ineffectiveness of existing fire extinguishing methods. Research was conducted on the performance requirements and industry status of fire control blankets suitable for lithium?ion battery fires. Through simulated lithium battery fire tests, a systematic study was conducted on potential candidate materials, fabric morphology, and organic coatings for fire control blankets. Fire prevention, insulation, strength, and explosion resistance tests were also conducted. In order to meet the requirements of fire prevention, insulation, and explosion resistance of fire control blankets, a three—layer structure composed of glass fiber fabric, ceramic fiber lining, and glass fiber fabric is proposed, providing technical support for technical researchers to develop more effective fire control blankets.

Key words: lithium—ion battery fire, control first and then eliminate, fire—controlling device, fire control blanket